How safe is BSC (bep20) chain? Is it okay to store a large amount of BTC and USDT on that chain? If Binance shutdown will the chain still operate normally?
Bsc is okay as long as you don't use crypto assets on the exchange; it's better with Metamask or other wallet apps like Trustwallet, Mycelium, and Exodus; for bitcoin, it's Bluewallet;
and Electrum has it on mobile and desktop.
Because if you store crypto in BSC (Bep20) under centralized control, the risk is quite high because you are not really in control of your coins; instead, the platform itself is in control of them. At least if Binance is blocked, your crypto assets under BSC20 will be in metamask, and you will hold their private key in metamask.